Difference between stainless steel photovoltaic bolts and iron bolts
Release Time:
2022-10-21
Stainless steel is more and more loved by people because of its corrosion resistance and not easy damage. So what is the difference between stainless steel photovoltaic bolts and iron bolts? Today, the editor of hot-dip galvanized screws will take everyone to understand:
Stainless steel is more and more loved by people because of its corrosion resistance and not easy damage. So what is the difference between stainless steel photovoltaic bolts and iron bolts? Today, the editor of hot-dip galvanized screws will take everyone to understand:
The steel and iron refining processes are carried out using redox reactions, but the two are very different in the reaction object. Ironmaking is to reduce iron, while steelmaking is to remove excess carbon in pig iron and other Removal of impurities. So iron and steel are distinguished by their carbon content. Iron-carbon alloys with carbon content below 2% are steel, and those with carbon content above 2% are called iron. So from a metallurgical point of view, there is no such thing as stainless iron.
Steel is widely used because of its toughness, elasticity and rigidity. The common reason for most consumers to buy is that stainless steel does not rust, and the measure is whether it will be attracted by magnets. As far as rust is concerned, rust is not resistant to corrosion. The main element that determines the corrosion resistance of stainless steel is chromium. Steels with a chromium content of 10.5% or more will not rust. At this time, the oxidation of chromium with the corrosive medium will form an oxide film on the surface, which can prevent basic further corrosion.
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What are the classification and use of high-strength bolts?
High-strength bolts are special bolts made of high-quality carbon steel or low-alloy steel. They are called high-strength bolts because of their high strength. High-strength bolt connections have the advantages of simple and fast installation, good mechanical performance, assembly and disassembly, high pressure bearing, safety and reliability, etc. High-strength bolts are a new type of steel structure connection method developed after riveting connection, and have now developed into one of the main means of steel structure connection today. 1. Classification of high-strength bolts High-strength bolts can be divided into two types: large hexagonal head type and torsion shear type in appearance; if they are divided into 8.8, 10.9, 12.9, etc., according to the performance grade, the large hexagonal head high-strength bolts currently used in our country have 8.8 and 10.9 grades, while the torsion shear type high-strength bolt strength bolt is only 10.9 grades. The large hexagonal head high-strength bolt connection pair consists of a bolt, a nut and two washers (the screw head and the nut each have a washer): the torsion shear type high-strength bolt connection pair consists of bolts, nuts and washers. When bolts, nuts and washers form a connection pair, their performance levels must match. 2. According to the connection method, high-strength bolts can be divided into three types: friction connection, tensile connection and pressure connection. Friction connection and pressure-bearing connection are both shear connection. Bolt friction connection trans
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